A SYSTOLIC PIPELINED NTSC PAL DIGITAL VIDEO ENCODER/

This paper describes the design of a multistandard video encoder. The proposed encoder accepts conventional NTSC/PAL video signals. The enco der consists of four major building functions which are color space co nverter, digital filters, color modulator, and timing generator. In or der to support multistandard video signals, a programmable systolic ar chitecture is adopted in designing various digital filters. Interpolat ion digital filters are also used to enhance SNR of encoded video sign als. The input to the encoder can be either YCbCr signal or RGB signal . The outputs are luminance (Y), chrominance (C), and composite video baseband (Y+C) signals. The architecture of the encoder is defined by using Matlab program and is modelled by using Verilog-HDL language. Th e overall operation is verified by using various video signals, such a s color bar patterns, ramp signals, and so on. The encoder contains 36 k gates and is implemented by using 0.65 mu m CMOS process.